Circle Formula

If you multiply π × r × r  then you will get the...

• radius

• diameter

• circumference

• area

If you multiply 2 × r  then you will get the...

• radius

• diameter

• circumference

• area

If a circle has a diameter of 10 ft. then which statement is true?

• The radius is 5 ft. 

•  The diameter is 5 ft

• The radius is 20 ft.

• The diameter is 20 ft.

If a circle has a diameter of 12 ft. then which formula below is correct for the area?

• π(24)

• π(6)(6)

• π(12)(12)

• π(24)(24)

Which segment is the diameter?

• AC

• BD

• LM

• CE

The distance from the center of the circle to any point on the circle is called the...

• radius

• diameter

• circumference

• area

The distance all the way across the circle is called the...

• radius

• diameter

• circumference

• area

If a circle has a radius of 10 ft. then which statement is true?

• The radius is 5 ft. 

•  The diameter is 5 ft

• The radius is 20 ft.

• The diameter is 20 ft.

If a circle has a radius of 5 ft. then which formula below is correct for the circumference?

• π(5)

• π(10)

• π(5)(5)

• π(10)(10)

Area of a circle is found by using which formula?

• Area= Pi divided by 2

• Area = Diameter x Radius

• Area= Pi x (Radius x Radius)

• Area = just guess because I didn't study!